Not sure if these changes matter or if they will do any good

I'm a non-professional SEO, so I'm not really sure if my plans make any sense. But anyway it would be nice if you could have a look at my rather simple questions :-)

I just had a look at my site www.break-fresh-ground.com where the main keyword is either "travelogues" or "travelogue".

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The title tag currently is "Travelogues and travel information".
Would you shorten this to just "Travelogues" or does it make no difference?

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I have three important links on the homepage (e.g. "Chris's RTW Adventure"). These links appear as headings to humans, so I marked them as <h2>. But does that make any sense at all for a link?

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My sub pages normally have a title-tag using the following scheme:Travelogue "3 weeks in India", chapter "Arrival in Delhi"
where "chapter" appearently is not a keyword.
A friend (not knowing too much about SEO either) told me I should use this scheme instead: Travelogue: "3 weeks in India": "Arrival in Delhi"
Is this good advice?